Avelino Chillarón was 12 or 13 years old when he realized that his surnames and those of his cousins ​​didn't match, so he decided to ask his uncle. This is how he learned that, although his father and aunt were siblings, they didn't have the same father, so he and his cousins ​​didn't share the same grandfather. In this way, Avelino realized that there was a part of his family he didn't know. The protagonist of this story feels partially mutilated from a part of his family history, a part that was taken away from him by a regime that established, over the years, a long period of widespread social amnesia about a series of corpses and missing persons throughout the spanish geography.